2x^2-25x-6=0

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Solution for 2x^2-25x-6=0 equation:


Simplifying
2x2 + -25x + -6 = 0

Reorder the terms:
-6 + -25x + 2x2 = 0

Solving
-6 + -25x + 2x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
2 the coefficient of the squared term: 

Divide each side by '2'.
-3 + -12.5x + x2 = 0

Move the constant term to the right:

Add '3' to each side of the equation.
-3 + -12.5x + 3 + x2 = 0 + 3

Reorder the terms:
-3 + 3 + -12.5x + x2 = 0 + 3

Combine like terms: -3 + 3 = 0
0 + -12.5x + x2 = 0 + 3
-12.5x + x2 = 0 + 3

Combine like terms: 0 + 3 = 3
-12.5x + x2 = 3

The x term is -12.5x.  Take half its coefficient (-6.25).
Square it (39.0625) and add it to both sides.

Add '39.0625' to each side of the equation.
-12.5x + 39.0625 + x2 = 3 + 39.0625

Reorder the terms:
39.0625 + -12.5x + x2 = 3 + 39.0625

Combine like terms: 3 + 39.0625 = 42.0625
39.0625 + -12.5x + x2 = 42.0625

Factor a perfect square on the left side:
(x + -6.25)(x + -6.25) = 42.0625

Calculate the square root of the right side: 6.485560886

Break this problem into two subproblems by setting 
(x + -6.25) equal to 6.485560886 and -6.485560886.

Subproblem 1

x + -6.25 = 6.485560886 Simplifying x + -6.25 = 6.485560886 Reorder the terms: -6.25 + x = 6.485560886 Solving -6.25 + x = 6.485560886 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6.25' to each side of the equation. -6.25 + 6.25 + x = 6.485560886 + 6.25 Combine like terms: -6.25 + 6.25 = 0.00 0.00 + x = 6.485560886 + 6.25 x = 6.485560886 + 6.25 Combine like terms: 6.485560886 + 6.25 = 12.735560886 x = 12.735560886 Simplifying x = 12.735560886

Subproblem 2

x + -6.25 = -6.485560886 Simplifying x + -6.25 = -6.485560886 Reorder the terms: -6.25 + x = -6.485560886 Solving -6.25 + x = -6.485560886 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6.25' to each side of the equation. -6.25 + 6.25 + x = -6.485560886 + 6.25 Combine like terms: -6.25 + 6.25 = 0.00 0.00 + x = -6.485560886 + 6.25 x = -6.485560886 + 6.25 Combine like terms: -6.485560886 + 6.25 = -0.235560886 x = -0.235560886 Simplifying x = -0.235560886

Solution

The solution to the problem is based on the solutions from the subproblems. x = {12.735560886, -0.235560886}

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